Cummins "Secrets of Better Fuel Economy"

[F8L]

This article pops up now and again and I feel it is a great read for those just getting started on the quest to better MPG. Well worth reading even if you don't drive big rigs. It is worth noting that this is specifically designed for the trucking industry but the principles still apply to us.

Cummins "Secrets of Better Fuel Economy"

Introduction: Understanding Fuel Economy

The importance of fuel economy to the successful operation of a trucking company cannot be understated. Fuel is one of the largest variable costs in a trucking venture.. While no trucking operation can control the cost of fuel; it has at least some control over the amount or rate of consumption.

Rock-Solid Rules

��

Every 2% reduction in aerodynamic drag results in approximately 1% improvement in fuel economy.

��

Above 55 mph, each 1 mph increase in vehicle speed decreases fuel economy by 0.1 MPG.

��

Worn tires provide up to 7% better fuel economy than new tires.

��

Used lug drive tires can get up to 0.4 MPG better fuel economy than new lug tires.

��

Ribbed tires on the drive axles provide 2–4% better fuel economy than lugged tires.

��

Every 10 psi that a truck’s tires are underinflated reduces fuel economy by 1%.

��

The break-in period for tires is between 35,000 and 50,000 miles. (big trucks)

��

Tires make biggest difference in MPG below 50 mph; aerodynamics is the most important factor over 50 mph.

��

The most efficient drivers get about 30% better fuel economy than the least efficient drivers.

��

Idle time is costly. Every hour of idle time in a long-haul operation can decrease fuel economy by 1% because you’re burning fuel and not moving.

[chrisspaulding]

.
Interesting. Thanks for the post.
Now I just need to know what % of drag my accessories(or lack of) are causing:

Front mud flaps
Window deflectors
no wheel trims
sirius antenna


Also, I wonder what the best tires are for MPG?
.

[F8L]

Originally Posted by chrisspaulding

.



Also, I wonder what the best tires are for MPG?
.

That is one we all want to know.

I think tire manufactures are looking into producing them and now they have plenty of incentive to do so. Keep your fingers crossed!